The MOV seems like it wasn't downloaded off the SD card, at least correctly. You may have had the video downloaded off the phone or you had the resolution of the sensor set low. I suggest downloading straight from SD and with 4k video.
Ive been dying to get out there and get some good photos with my mavic (Im an amateur). I really would like to know some good structures or places to fly my drone, Just let me know what you got!